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Service bulletin KC-2263-Ver5

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10237337
Published by NHTSA2023-06-05
Manufacturer's numberKC-2263-Ver5
Manufacturer's date2023-05-16
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

CBR: Timing Gear Plate Repair. This solution provides supplementary information to be used when installing a Timing Gear Plate with Integrated Seal.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
MACK ANTHEM (AN)2017
MACK ANTHEM (AN)2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
MACK GRANITE (GR)2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
MACK LR2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
MACK PINNACLE (CXU)2017 (the catalog's model; the bulletin names a series or trim of it)
MACK PINNACLE (PI/PN)2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
MACK TE2019 to 2021
MACK TERRAPRO (TE)2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
MACK TERRAPRO (TE)2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
26V1390002026-03-11. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE
20235882023-10-31. Engine
23V7310002023-10-31. ENGINE

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
TSB M-913-001 2026092026-10-02. Service bulletin. Parker engine-mounted hydraulic pump service bulletin.
M0304 EC0033 2026062026-06-29. Emissions. Mack Trucks has determined that certain vehicles equipped with a model year (“MY”) 2017-2018 MP8 Turbo Compound (TC) engine may not meet California and Federal Regulations (CARB). This Recall is for updated software that will reduce the amount of time necessary for the system to operate in a cold engine warm-up strategy and provide health monitoring of the Selective Catalyst Reduction (SCR).
CBR-2592-1 2026062026-06-29. Service bulletin. The purpose of this CBR is to provide steps on how to correct a customer complaint of DTC P107B86 accompanied With intermittent loss of throttle.
M0039 0320262026-04-02. Emissions. Emissions - EC0039 MST21 Failure to Detect P20EE - AN, CHU.
M0302 0220262026-03-03. Emissions. Emissions - Mack Trucks has determined that certain vehicles equipped with a model year (“MY”) 2017-2018 MP7 engine may not meet California and Federal Regulations (CARB).
CBR 820-9 2026012026-02-03. Service bulletin. CBR - Mack Chassis - Engine Brake Only Works With The Brake Pedal, No Function During Cruise. US07 And Newer Emissions, Model Year 2008 And Newer.
CBR 2128-7 2026012026-02-03. Service bulletin. CBR - Engine Control Module (EMS) Software Information - Improvement List (Change Log), US21+OBD2021 Emissions ONLY
CBR 2107-22 2026012026-02-02. Service bulletin. CBR - Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions to US22+OBD2023 (DOES NOT APPLY TO AN(4) and PR(4)).
CBR 199 2025122026-01-05. Service bulletin. Vehicles affected by this issue will show coolant runoff on the front rights side of the engine.
CBR 2171-11 2025112025-12-03. Service bulletin. CBR - Mack Temperature Sensor Troubleshooting Guide